1.	Simplify 1 Simplify the following expression: $$ \left(-4 + -3\right)\left(-1 + 4\right) + {\left(2 - 5\right)}^{2} $$ Correct Answer $$ -12$$ or -12.0000

2.	Simplify 2 Simplify the following expression: $$ \frac{2\frac{5}{3}}{{\left(\frac{-5}{3}\right)}^{\left(1 + 3\right)}} $$ Correct Answer $$ \frac{54}{125}$$ or 0.432000

3.	Fractions 1 Simplify the following expression: $$ \frac{-5}{6} - \frac{2}{3} $$ Correct Answer $$ \frac{-3}{2}$$ or -1.5

4.	Fractions 2 Simplify the following expression: $$ \frac{-3}{6}\frac{-2}{4} $$ Correct Answer $$ \frac{1}{4}$$ or 0.25

5.	Significant figures 1. Write the following to 5 significant figures: 0.000066993738 Correct Answer 0.000066994 or $$6.6994\times10^{-5}$$ 2. Write the following to 5 significant figures: 37.263210 Correct Answer 37.263 or $$3.7263\times10^{1}$$

6.	Standard Form 1. Write the following in standard form to 2 significant digits: 0.920901 Correct Answer $$9.2\times10^{-1}$$ 2. Write the following in standard form to 2 significant digits: 0.00194082 Correct Answer $$1.9\times10^{-3}$$

7.	Significant figures 1. Write the following in preferred standard form to 3 significant digits: 4831.3 Correct Answer $$4.83\times10^{3}$$ 2. Write the following in preferred standard form to 4 significant digits: 210.317 Correct Answer $$210.3\times10^{0}$$

8.	Simplify 2 Simplify the following expression: $$ \frac{-5}{2} + 3(-2) - {\left(4 + 1\right)}^{2} $$ Correct Answer $$ \frac{-67}{2}$$ or -33.5000

9.	Simplify 1 Simplify the following expression: $$ \left(2(-2) - 4(-2)\right)2(-5)(-4) $$ Correct Answer $$ 160$$ or 160.000

10.	Simplify 2 Simplify the following expression: $$ 2\frac{-4}{1}{\left(2 + 4\right)}^{\left(-4 - -3\right)} $$ Correct Answer $$ \frac{-4}{3}$$ or -1.33333